28971920

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{6833}}^1$

素因数の和:6899

約数の個数: 40

約数和(自身を含む): 68640696

約数和(自身を除く): 39668776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 6833, 13666, 27332, 34165, 54664, 68330, 109328, 136660, 273320, 362149, 546640, 724298, 1448596, 1810745, 2897192, 3621490, 5794384, 7242980, 14485960, 28971920]

約数ペア:

[(1, 28971920), (2, 14485960), (4, 7242980), (5, 5794384), (8, 3621490), (10, 2897192), (16, 1810745), (20, 1448596), (40, 724298), (53, 546640), (80, 362149), (106, 273320), (212, 136660), (265, 109328), (424, 68330), (530, 54664), (848, 34165), (1060, 27332), (2120, 13666), (4240, 6833)]